Order Araneida Clerck, 1757 - spiders Suborder Araneae Clerck, 1757 - tailless spiders Infraorder Opisthothelae Pocock, 1892 - unsegmented spiders 1 Microorder Mygalomorpha Pocock, 1892 - mygalomorphs see [unranked] Mygalomorphae Pocock, 1892 2 Microorder Araneomorpha Smith, 1902 - araneomorphs